Scaffold hinge



FIG. 1 is a perspective front, first end, and top view of a scaffold hinge showing the present design;

FIG. 2 is a front elevational view of the design of FIG. 1;

FIG. 3 is a top plan view of the design of FIG. 1;

FIG. 4 is a bottom plan view of the design of FIG. 1;

FIG. 5 is a rear elevational view of the design of FIG. 1;

FIG. 6 is a first end elevational view of the design of FIG. 1;

FIG. 7 is a second other end elevational view of the design of FIG. 1; and,

FIG. 8 is a perspective front, top, and first end view of the scaffold hinge showing its operating environment in phantom lines, which form no part of the claimed design. The directional arrow in this view indicates the direction of movement of the claimed design in operation, and also forms no part of the claimed design. 

The ornamental design for a scaffold hinge, as shown and described. 